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Tunable multi-wavelength generation unit

A generation unit, multi-wavelength technology, applied in the direction of electrical components, laser components, structure/shape of active medium, etc., to achieve high tolerance, improve flexibility, and compact design

Inactive Publication Date: 2011-10-05
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a tunable multi-wavelength generating unit, which solves the shortcomings of the existing laser output fixed single wavelength

Method used

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Examples

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Embodiment 1

[0020] like figure 1 As shown: light enters the input port of the 1×N optical splitter, the 1×N optical splitter divides the incident light into N paths, and the N paths of light are respectively output from the N output ports of the 1×N optical splitter.

[0021] Then the N lights enter the Port 1 ports of the corresponding optical circulators 1 to N, and the N lights respectively pass through the optical circulators 1 to N, output from the Port 2 ports of the optical circulators 1 to N, and enter the corresponding In the FBG whose central wavelength is around 1550nm, and the central wavelength interval is about 0.2nm.

[0022] The N paths of light enter the corresponding N FBGs respectively, and the N FBGs are pasted on the same piezoelectric ceramic in parallel, or respectively pasted on the corresponding N piezoelectric ceramics, and the piezoelectric ceramics are loaded along the length direction of the FBG. Voltage, adjust the piezoelectric ceramic driving power to chan...

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Abstract

The invention provides a tunable multi-wavelength generation unit and solves the shortcoming in the prior art that a present laser outputs a fixed single wavelength. The tunable multi-wavelength generation unit comprises an input terminal and an output terminal. The input terminal is connected to one end of a light demultiplexer. The other end of the light demultiplexer is connected to the first ports of at least two light circulators. The second port of each light circulator is respectively connected to an FBG (Fiber Bragg Grating). The third port of each light circulator is respectively connected to an optical coupler. The number of the light circulators is the same with that of the FBG. Each FBG is provided on a period adjusting mechanism. The tunable multi-wavelength generation unit effectively solves the shortcoming of a fixed wavelength laser.

Description

technical field [0001] The invention relates to a tunable multi-wavelength generating unit, in particular to a tunable multi-wavelength generating unit based on a piezoelectric ceramic driven fiber Bragg grating (FBG). Background technique [0002] Fiber lasers are developed on the basis of doped fiber amplifier technology. The waveguide structure and strong light pumping characteristics of fiber lasers make them have many advantages such as high output power, good beam quality, high conversion efficiency, low threshold, narrow line width, multiple output wavelengths, good compatibility and simple structure. It has broad application prospects in the fields of optical fiber communication, optical fiber sensing, military, industrial processing, optical information processing and full-color display. Especially tunable multi-wavelength generation technology plays an extremely important role in tunable multi-wavelength fiber lasers. [0003] At present, lasers for communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/102
Inventor 任立勇韩旭
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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